1000000087 has 2 divisors, whose sum is σ = 1000000088.
Its totient is φ = 1000000086.
The previous prime is 1000000033. The next prime is 1000000093. The reversal of 1000000087 is 7800000001.
Adding to 1000000087 its reverse (7800000001), we get a palindrome (8800000088).
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1000000087 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 1000000087.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1000000007) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000043 + 500000044.
It is an arithmetic number, because the mean of its divisors is an integer number (500000044).
Almost surely, 21000000087 is an apocalyptic number.
1000000087 is a deficient number, since it is larger than the sum of its proper divisors (1).
1000000087 is an equidigital number, since it uses as much as digits as its factorization.
1000000087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 56, while the sum is 16.
The square root of 1000000087 is about 31622.7779772745.
Note that the first 3 decimals coincide.
The cubic root of 1000000087 is about 1000.0000290000.
Note that the first 4 decimals are identical.
The spelling of 1000000087 in words is "one billion, eighty-seven", and thus it is an aban number and an uban number.